The short answer · Fasting insulin
Take myo-inositol & d-chiro-inositol for fasting insulin. This is the one to buy.
Nutricost, Women, Myo & D-Chiro Inositol, 120 Capsules
4.8· 6,921 ratings· $0.48/serving
Myo-Inositol 2000 mg — inside the studied 2000-4000 mg window
Of 1,152 products scored for Fasting insulin, Nutricost, Women, Myo & D-Chiro Inositol, 120 Capsules ranks #1 with a DoseRank score of 84. Myo-Inositol leads the evidence here, backed by D-Chiro-Inositol.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Myo-Inositol & D-Chiro-Inositol?”Evidence Strong evidence
Myo-Inositol leads the evidence here, backed by D-Chiro-Inositol.
- Myo-InositolThe pick
Strong evidence · 2000 mg
The dominant inositol in the body; a second-messenger precursor best studied for insulin signaling, PCOS, and anxiety at roughly 2-4 g/day.
- D-Chiro-InositolThe pick
Moderate evidence · 50 mg
Minor inositol stereoisomer paired with myo-inositol in nature; thought to aid insulin signaling, often dosed in a 40:1 myo-to-DCI ratio for PCOS.
- Inositol
Strong evidence · 2000 mg
Sugar alcohol acting as a cell-signaling precursor; the myo- form predominates and is commonly used for PCOS, mood, and metabolic support.
The dose“Is the dose actually effective?”Dose fit 66
1 of 2 dosed ingredients land in the studied range. Myo-Inositol at 2000 mg lands inside the studied 2000-4000 mg window.
Myo-Inositol
Studied window 2000-4000 mg · this pick 2000 mg
D-Chiro-Inositol
Studied window 300-1200 mg · this pick 50 mg
The ranking“Why should I trust this pick?”Trust 95
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
- 1,152 products scored
- Never paid placement
- Evidence level: Strong · 91
- 163 brands
- 5 ingredients
The price“Can I do better than $0.48 a serving?”Value 65
$0.48 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.14 per serving.
- 3Micro Ingredients, Myo & D-Chiro Inositol Powder, 1 lb (454 g)Score 83 · $0.14/servingiHerb
- 5Micro Ingredients, Myo & D-Chiro Inositol, 240 Vegetarian CapsulesScore 83 · $0.40/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $0.48 a serving.Nutricost, Women, Myo & D-Chiro Inositol, 120 Capsules — in stock at a tracked retailer.
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Nutricost, Women, Myo & D-Chiro Inositol, 120 Capsules ranks #1 for Fasting insulin with a DoseRank score of 84. The score blends clinical strength, evidence, dose fit, trust signals and value across 1,152 products scored for this outcome.
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Other outcomes
- Fasting blood glucoseBlood glucose after fasting.
- Glucose toleranceAbility to handle a glucose load appropriately.
- HbA1cAverage blood glucose marker over prior months.
- Insulin resistanceReduced response to insulin associated with metabolic disease.
- Insulin sensitivityEfficiency of tissue response to insulin.
- Postprandial glucoseBlood glucose after meals.